Multi-component adsorption study by using bone char: modelling and removal mechanisms

Ferreira, Regiane Cristina; Dias, Diogo; Fonseca, Isabel; Bernardo, María; Pimenta, João Lourenço Castagnari Willimann; Lapa, Nuno; Barros, Maria Angélica Simões Dornellas de

doi:10.1080/09593330.2020.1805026

Cited by 11 publications

(9 citation statements)

References 82 publications

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“…On the other hand, besides Si, Fe, and Ca, the NOR sample also presented high content of Al, which is related to its mineral origin. These results are in agreement with previous studies [37,38].…”

Section: Bulk Mineral Contentsupporting

confidence: 94%

“…The kinetic and equilibrium studies were undertaken at the pH 3.00 adjusted by adding HNO 3 0.1-1.0 mol L −1 . The solid/liquid ratio as well as the solution pH used in the adsorption experiments were previously optimized in laboratory essays [37]. Doses of carbon below 10 mg provided very low removals of Cu ions.…”

Section: Batch Adsorption Assaysmentioning

confidence: 99%

“…Recently, Ferreira et al (2022) [37] have studied the simultaneous removal of paracetamol with Cu 2+ ions by using bone char, and a cooperative adsorption mechanism was observed. The present work intends to give continuity to that study by evaluating the competitiveness/cooperativeness between both adsorbates when removed with low-cost carbons from babassu and dende biowastes.…”

Section: Introductionmentioning

confidence: 99%

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Removal of Paracetamol and Cu2+ from Water by Using Porous Carbons Derived from Agrowastes

Ferreira,

de Araújo,

Dias

et al. 2023

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Dende and babassu coconuts are largely used in tropical countries, namely in Brazil, for the extraction of oils from kernels. The remaining biowastes are industrially processed to produce porous carbons (PCs). PCs derived from dende and babassu biowastes and produced at an industrial scale have been characterized by textural, chemical, and ecotoxicological parameters. A commercial activated carbon (CC) of mineral origin has been used as a benchmarking material. Although the CC sample presented a higher surface area (SBET = 1083 m2/g), the PCs derived from the biowastes were richer in micropores (Vmicro = 0.25–0.26 cm3/g), while the CC carbon presented wider pore size distribution with a higher mesopore volume (Vmeso = 0.41 cm3/g). All the adsorbents used in this work have shown a non-acute ecotoxic behavior for the bacterium Vibrio fischeri (EC50-30 min > 99% v/v). The adsorbents have been tested for paracetamol and Cu2+ adsorption in mono- and bicomponent solutions. The uptake capacities of paracetamol (qe, 98–123 mg g−1) and Cu2+ (qe, 15–18 mg g−1) from monocomponent solutions were similar to the ones obtained in the bicomponent solutions, indicating no competition or cooperative effects but a site-specific adsorption. This finding represents an advantage for the removal of these adsorbates when present in the same solution as they can be adsorbed under similar rates as in the single systems. Paracetamol adsorption was related to micropore filling, π-π interactions, and H-bonding, whereas Cu2+ removal was attributed to the cation exchange mechanism and complexation to the hydroxyl groups at the carbons’ surface.

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Section: Bulk Mineral Contentsupporting

confidence: 94%

Section: Batch Adsorption Assaysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Removal of Paracetamol and Cu2+ from Water by Using Porous Carbons Derived from Agrowastes

Ferreira,

de Araújo,

Dias

et al. 2023

Processes

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“…In recent times, attention has been shied to the application of sorbents from biomaterials such as waste animal bones, seashells, snail shells and eggshells sources, since they are low-cost materials compared to the cost of commercial adsorbents, such as activated carbon, ion-exchange resins, and titanium oxide. [10][11][12] Compositionally, animal bones consist of 30-35% organic components (collagen (95%) and proteins) and 65-70% inorganic components. 13 The effect of using bone powder and bone ash, as a cement additive, on the mechanical properties of cement mortar have been reported in the literature.…”

Section: Ebikapayementioning

confidence: 99%

“…In recent times, attention has been shifted to the application of sorbents from biomaterials such as waste animal bones, seashells, snail shells and eggshells sources, since they are low-cost materials compared to the cost of commercial adsorbents, such as activated carbon, ion-exchange resins, and titanium oxide. 10–12…”

Section: Introductionmentioning

confidence: 99%